First post, by vstrakh
I'm building a 486DX2-66 system, this is the first time I ever use/own a VLB video card (CL GD-5428), and there's one weird quirk I don't know how to interpret.
On a cold boot the system properly detects stuff and all, showing "energy star" logo, etc.
But when doing warm reboot with Ctrl-Alt-Del, or when exiting the BIOS without saving, or doing hard reset - the bios beeps error code saying video card is not detected, but then immediately something kicks in (I believe I can see video bios messages blinked shortly) and the bios continues booting with video ok, with all graphical bells and whistles.
Looks totally ok after that error beep, but I didn't test it any further (multi i/o, CF-IDE setup needed, etc).
Any ideas on what that behavior could mean?
The mobo is built on FOREX FRX46C512A chipset, has onboard 256KB of cache all soldered and cache config options are hardwired.
Looks exactly like this one: https://www.ultimateretro.net/en/motherboards/2512
The Award BIOS V4.50G shows "U-BOARD GREEN PC" name , and the id string is "07/11/94-FOREX-46C521A-2C4R3U01-00".
Initially the motherboard came with U5S-SUPER33 cpu overclocked to 40MHz, but I reverted all jumper settings to 33MHz and switched cpu type for 486DX2, the bios reports it as 486DX2-S at 66MHz.